Pipe-wrench



A.sPERDuL PIPE WRENCH.

APPLICATION FIL-ED JULY121920.

1,371,943. Patented Mar. 15 1921.

2 SHEETS-SHEET l.

INVENTOR A. SPEHDUATI.

i PLPE WRENCH.

APPLlCATON FILED )ULYYLZ |920.

Patented Mar. 15, 1921 ATTORNEY 2 SHEETS-SHEET 2.'

.UNITED STATES PATENT OFFICE.

ANTONIO SPERDUTI, OF LEAD, SOUTH DAKOTA.

' PIPE-WRENCH.

Application filed .Tuly 12, 1920. Serial No. 395,808. i

To all whomz't mag/'concern Y y Be it known that I, ANToNio SPERDUTI, a citizen of the United States of America, residing at Lead, in the county of Lawrence, and btate of South Dakota, have invented new and useful Improvements in PipeylVrenches, of which the following is a speciicatioii.

This invention relates to tools, particularly to wrenches, and has for its object the provision of a pipe wrench of the tongs type and having associated therewith a removable inserted jaw, the wrench being adapted to turn a pipe of one diameter when said insert is in position and being adapted to turn a pipe of a larger diameter or a bushing when said insert is removed. Y f

An important object is the provision of a i wrench of this character in which the jaw members carry keys which are rectangular in cross sectionand each of which has one edge projecting beyond theV inner surface of the jaws whereby to constitute a grip, the keys being removable and capable of insertion within a. different position to bring another edge in operative position when one edo'e has become worn.

nother object is theV provision or" Y a wrench of this characterV in which the adjustment from one adaptation to another is quickly and easily effected.

An additional object is the provision of a wrench of this character which will be simple and inexpensive in manufacture, highly efficient in use, durable in service, and a general improvement in the art.

lVith the above and other objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings in which- Figure 1 is an elevation of my wrench showing it arranged for gripping a pipe of minimum diameter,

F ig. 2 is a similar view showing one side plate of the inserted jaw removedV or broken away,

Fig. 3 is a cross sectional view taken through both wedge members,

Fig. 4 is an elevation with the inserted jaw removed, and

Fig. 5 is a perspective view of the inserted jaw alone. Y

Referring more particularly tothe .drawings, the numerals 10 and 11 designate broadly the two jaws of the wrench and these jaws terminate in elongated handles 12 which are crossed andA pivotally connected,v

as shown at 13. The jaws proper are relatively wide compared with the handles andr are cut away .in the usual manner at the point of crossing. The jaws are formedV with key-ways 14 and 15, respectively, which f are'square in cross section andtapered longitudinally and which extend slightly into the inner walls of the jaws, las lclearly shown.

The jaw 11 is longer than the jaws 10so as to extend more than half way around a pipe engaged between the jaws. Disposed within the key-ways 14: and 15 are keys 16 and 17,

respectively, which lwhen-in position, have one edge extending -beyondythe inner wall 'of the associated aw. Y

Association Vwith theljaw 11 is a removable jaw 18 which includes an arcuate face portion 19 which engages against the curved Vinner face of the jaw 11 and which further includes iianges 20 which are disposed against opposite sides of the jaw 11. The

Vouter face of the arcuate portion 19 is preferably serrated, as indicated at 21, whereby to form anefiicient gripping surface. The langes 20 are formed with rectangular holes 22 registering with the key-way V15V and when this auxiliary jaw is placed in position v itis necessary to remove the' key 17, place the jaw member 18 in position, and then reinsert the key through the holes 22 and keyway 15.

In the use of the device when the auxiliary jaw member 18 is positioned as above described, itr'will be apparent that the opening between the jaws isv relatively constricted. The device is used by swinging the handles 12 apart so as to engage the pipe Y or other object to be turned between the jaws V'10 and 18 whereupon the handles are pressed together to grip the pipe which may then be turned.

and then reinserting the key 17 within the key-way 15, it will be apparent that the device may be used in the same manner for gripping aV pipe of larger diameter or for gripping a bushing adapted to `be threaded onto a pipe of the first mentioned diameter.

. By removing the auxiliary jaw member 18 In this way it will be seen that the device A may be used upon objects having different diameters within certain limits. When the auxiliary 'jaw member 18 is not used it is apparent that it is the edges of the keys 16 and 17 which eXert the gripping action and prevent slippage ofthe jaws upon the article to be turned.

From the foregoing description and a study of the drawings it will be apparent that I have thus provided a simply constructed and consequently inexpensive Wrench by means of whichlpipes, bushings, or other round objectsmay be easily turned, the device being adjustable as above described and being highly eiiicient and durable.

While I have shown and described the preferred embodiment of my invention, it is of course tobe understood that I reserve the right to make such changes in the form, construction, and arrangement of parts as will not depart from the spirit of the linvention or the scope of the subjoined claim.

'Having thus described my invention, I claim: v

A'pipe wrench comprising a pair of jaw `members terminating in handles and plvoted in crossed relation, each jaw member being formed with a transverse tapered keyway adapted to receive a key having one edge extending through the inner face of each jaw, and a removable jaw member associated' with one of said jaws and formed as an arcuate portion conformingly engaging against the inner face of the associated jaw and serrated, said removable jaw menn-V ber further including anges disposed on opposite sides of the associated jaw and 'formed with holes registering with the keyway therein, and keys `disposed withinvsaid key-ways.

ANTONIO SPERDUTI. 

